Josh Groban is an American singer.
When Lisa showed the painting to her teacher she said she thought the painting was very imaginative, though her teacher did not agree.
Lisa then showed the painting to the whole class. Later, when Lisa and Juliet were playing, they started to sing one of Groban's songs.
At a dinner with both Lisa's and Juliet's family together they thought about performing a medley of Josh Groban's 12 most popular downloads.